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~/dnsniffer/issuers/shenzhen-yamu-security-technology-co·rank #211

▸ How many domains does Shenzhen Yamu Security Technology Co secure?

2

active domains whose current TLS certificate was issued by Shenzhen Yamu Security Technology Co, as of - 0.00% of all attributed domains.

# rank #211 of all CAs# all records held: 2# subdomains: 0# intermediates: 1# China
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~/issuers/shenzhen-yamu-security-technology-co/history·active domains
2
domains secured by Shenzhen Yamu Security Technology Co on 2026-10-15 · ▲ +1 (+100.00%) since 2025-09-30
0.881.191.51.812.122025-09-30: 1 active2025-10-31: 1 active2025-11-30: 1 active2025-12-31: 1 active2026-01-31: 1 active2026-02-28: 1 active2026-03-31: 1 active2026-04-30: 1 active2026-05-31: 1 active2026-06-30: 1 active2026-07-31: 1 active2026-08-31: 1 active2026-09-01: 1 active2026-09-02: 1 active2026-09-03: 1 active2026-09-04: 1 active2026-09-05: 1 active2026-09-06: 1 active2026-09-07: 1 active2026-09-08: 1 active2026-09-09: 1 active2026-09-10: 1 active2026-09-11: 1 active2026-09-12: 1 active2026-09-13: 1 active2026-09-14: 1 active2026-09-15: 1 active2026-09-16: 1 active2026-09-17: 1 active2026-09-18: 1 active2026-09-19: 1 active2026-09-20: 1 active2026-09-21: 1 active2026-09-22: 1 active2026-09-23: 1 active2026-09-24: 1 active2026-09-25: 1 active2026-09-26: 1 active2026-09-27: 1 active2026-09-28: 1 active2026-09-29: 1 active2026-09-30: 1 active2026-10-01: 1 active2026-10-02: 1 active2026-10-03: 1 active2026-10-04: 1 active2026-10-05: 1 active2026-10-06: 1 active2026-10-07: 1 active2026-10-08: 1 active2026-10-09: 1 active2026-10-10: 1 active2026-10-11: 1 active2026-10-12: 1 active2026-10-13: 1 active2026-10-14: 1 active2026-10-15: 2 active2025-09-302026-10-15

# y-axis starts at 0.88, not zero - domain counts move by fractions of a percent a day. Dashed segments are estimated: reconstructed from certificate first-seen dates before daily snapshots began, not measured on the day.

# change over time
30 days
▲ +100.00%
+1 domains
90 days
▲ +100.00%
+1 domains
1 year
▲ +100.00%
+1 domains
# intermediate CAs
Intermediate certificate authorities operating under Shenzhen Yamu Security Technology Co, with the number of active domains each currently secures.
intermediatecountrydomains
HTTPS Automation Research RSA DV SSL CA G1China2
# faq
? How many domains does Shenzhen Yamu Security Technology Co secure?
Shenzhen Yamu Security Technology Co is the certificate authority for 2 active domains as of October 15, 2026 - 0.00% of every domain DNSniffer can attribute to an issuer.
? Is Shenzhen Yamu Security Technology Co gaining or losing market share?
The number of domains secured by Shenzhen Yamu Security Technology Co has grown by 100.00% over the last year (+1 domains).
? Which intermediate CAs does Shenzhen Yamu Security Technology Co sign from?
We have seen 1 intermediates under Shenzhen Yamu Security Technology Co, the busiest being “HTTPS Automation Research RSA DV SSL CA G1” with 2 domains. The full list, with per-intermediate counts, is on this page.
? Where does this number come from?
DNSniffer ingests Certificate Transparency logs continuously and records the issuer of the most recent certificate seen for each domain, then snapshots the per-issuer count once a day. It measures how much of the live web a CA currently secures, not how many certificates it has issued over its lifetime.
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